You can
put this solution on YOUR website!
1+1+2÷2+1+2+3÷3+1+2+3+4÷4....
Separate it into groups to get the pattern
1 + 1+2÷2 + 1+2+3÷3 + 1+2+3+4÷4....
Extend the pattern until there are 20 numbers
(we get the 20th number just as it bwgins the
last group):
1 + 1+2÷2 + 1+2+3÷3 + 1+2+3+4÷4 + 1+2+3+4+5÷5 + 1
We do divisions first, and they're all 1's:
1 + 1+1 + 1+2+1 + 1+2+3+1 + 1+2+3+4+1 + 1
1 + 2 + 4 + 7 + 11 + 1
Answer: 26
Edwin
